Absorbent material and method of making same

Details Absorbent material and method of making same Absorbent material and method of making same

D - Textiles, Paper

04

H

D04H 1/48 (2006.01) D04H 1/54 (2006.01) D04H 13/00 (2006.01)

Patent

CA 2132964

2132964 9322486 PCTABS00027 An absorbent material suitable for use as a medical or hygienic absorbent and comprises a non-woven fibre sheet having dense surface layers (10) and between these layers a less dense region where most of the fibres extend in the plane of the sheet. Transversely extending fibres (16) help to bind the material, the fibres also being bonded to some extent by a hot melt bonding material, e.g. core/sheath-type bi-component fibres. The material is made by forming a blend of fibres, including a minor weight of hot melt fibres, by cross-lapping a plurality of layers (14) to form a web, subjecting the web to needling at low punch density with penetration through the web, thereafter subjecting surface regions (10) of the web to higher punch density needling to form the dense surface layer (10) at each face from the web. The web is then heated, e.g. by high temperature air, to soften the hot melt material and to cause it to bond adjacent fibres while retaining its fibrous form and without significant shrinkage of the web as a whole.

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